feat(editor): placement-time + resize-time opening guides

Extend the opening proximity guides to two more interactions:

  - PLACEMENT: the door/window placement tools publish the same 3D guides
    (sill/head, edge proximity, sill alignment, equal-spacing) while a NEW
    opening is being dropped; window placement also snaps its sill to a
    neighbour's sill/centre/top (Shift bypass) — so "two windows aligned" reads
    during placement, not just move.
  - RESIZE: a new `onDrag` hook on the linear-resize handle descriptor lets the
    door/window width/height arrows publish live guides for the edge being
    resized — proximity to neighbours as the width grows, and the live sill/head
    as a window's height changes. The generic LinearArrow stays kind-agnostic;
    only door/window declare the hook.

Refactor (Codex review follow-up): one `publishOpeningGuidesForWallEvent`
wrapper now backs all four wall-event publish sites (door/window move +
placement) over a shared `makeWallToWorld`; window placement's repeated
sill-snap is a single `resolvePlacementY` helper. Opening guides clear on
commit / leave / cancel / roof-hover / unmount (mirroring the alignment-guide
lifecycle) and on resize end.

Codex-reviewed — no blockers; lifecycle/leaks, coordinate frame, sill-snap
precedence, and resize disposal confirmed. Typecheck + biome + 23 core + 170
nodes tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/nodes/src/window/move-tool.tsx

@@ -31,7 +31,7 @@ import { BoxGeometry, EdgesGeometry, type Group } from 'three'
 import { LineBasicNodeMaterial } from 'three/webgpu'
 import {
   clearOpeningGuides3D,
-  publishOpeningGuides3D,
+  publishOpeningGuidesForWallEvent,
   resolveSillSnap,
 } from '../shared/opening-guides-runtime'
 import {
@@ -304,7 +304,7 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
         target.valid,
       )
 
-      publishOpeningGuides3D({
+      publishOpeningGuidesForWallEvent({
         wall: target.wallNode,
         movingId: movingWindowNode.id,
         centerS: target.clampedX,
@@ -312,15 +312,8 @@ const MoveWindowTool: React.FC<{ node: WindowNode }> = ({ node: movingWindowNode
         width: movingWindowNode.width,
         height: movingWindowNode.height,
         includeVertical: true,
-        nodes: useScene.getState().nodes,
-        toWorld: (s, y) =>
-          wallLocalToWorld(
-            target.wallNode,
-            s,
-            y,
-            getLevelYOffset(),
-            getSlabElevation(target.event),
-          ),
+        levelYOffset: getLevelYOffset(),
+        slabElevation: getSlabElevation(target.event),
       })
     }